SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492024-03-29T04:02:25-06:00SparkFun Electronicsrxn on PRT-11710 - Jumper Wires Premium 6" F/F - 20 AWG (10 Pack)rxnurn:uuid:67d989d1-7120-6b80-a6d9-95166ee764a52022-06-02T15:27:20-06:00<p>Are these solid copper or copper coated aluminum? I'm looking for jumpers I can cut and solder, almost all of the cheap jumper wire packs uses CCA/copper coated steel which is barely solderable, and very low quality if it is.</p>